Full Version: Laser tube life
From: Harvey only (HARVEY-ONLY) [#9]
28 Feb 2007
To: JHayes55 [#8] 28 Feb 2007
From: JHayes55 [#10]
28 Feb 2007
To: Harvey only (HARVEY-ONLY) [#9] 1 Mar 2007
Harvey my friend - I always learn quickly when listening to smart people like
you and I was testing your theory - but your too quick for me. No surprise that Jeanette got it though - it's like she has radar.
The package of items you emailed me were great - have not had a minute to play with them yet but I will.
From: Doc (GREAT_ATLANTIC) [#11]
1 Mar 2007
To: Dave Jones (DAVERJ) [#2] 1 Mar 2007
quote:
OK, but why is it that the tube that sits unused will leak the helium, while one that is used for say 10 minutes a week won't?
I've been told that the heat generated by just a small amount of use each day/week is enough to keep the gaskets supple and seated properly. When left cold for long periods, the material in the gaskets can harden to a point where micro-fractures allow the gas to escape very slowly.
From: Dave Jones (DAVERJ) [#12]
1 Mar 2007
To: Doc (GREAT_ATLANTIC) [#11] 1 Mar 2007
From: Harvey only (HARVEY-ONLY) [#13]
1 Mar 2007
To: Doc (GREAT_ATLANTIC) [#11] 1 Mar 2007